I liked the premise of this book: a shift.... or perhaps, a crack... in the space-time continuum, whereby the protagonist could access an earlier time of her life to try to fix her (for lack of a better word) stalled relationship with her now, husband (then, boyfriend). Could she make different choices? What will the outcome be? The storyline was skipping along just fine, until about half-way in, and then it became akin to hopping on one foot and inching along. I guess that part of the cause of that speed bump was that the protagonist was trying to come to terms with the fact that she could access the past on a landline telephone -- but it got draggy, for me. Afterwards, the conclusion came rushing a little too fast, and it wasn't even an explosive one at that. Other than that, it's still a decent read.